2 import sys, os, subprocess, signal, getopt
6 exepath = os.path.split(exe)[0] or '.'
7 exeprefix = os.path.split(os.path.abspath(exepath))[0]
9 # fix the PYTHONPATH to include our lib dir
10 if os.path.exists("%s/lib/bup/cmd/." % exeprefix):
11 # installed binary in /.../bin.
12 # eg. /usr/bin/bup means /usr/lib/bup/... is where our libraries are.
13 cmdpath = "%s/lib/bup/cmd" % exeprefix
14 libpath = "%s/lib/bup" % exeprefix
16 # running from the src directory without being installed first
17 cmdpath = os.path.join(exepath, 'cmd')
18 libpath = os.path.join(exepath, 'lib')
19 sys.path[:0] = [libpath]
20 os.environ['PYTHONPATH'] = libpath + ':' + os.environ.get('PYTHONPATH', '')
21 os.environ['BUP_MAIN_EXE'] = os.path.abspath(exe)
23 from bup.helpers import *
27 log('Usage: bup [-?|--help] [-d=BUP_DIR|--bup-dir=BUP_DIR] COMMAND [ARGS]'
30 ftp = 'Browse backup sets using an ftp-like client',
31 fsck = 'Check backup sets for damage and add redundancy information',
32 fuse = 'Mount your backup sets as a filesystem',
33 help = 'Print detailed help for the given command',
34 index = 'Create or display the index of files to back up',
35 join = 'Retrieve a file backed up using "bup split"',
36 ls = 'Browse the files in your backup sets',
37 midx = 'Index objects to speed up future backups',
38 save = 'Save files into a backup set (note: run "bup index" first)',
39 split = 'Split a single file into its own backup set',
42 log('Common commands:\n')
43 for cmd,synopsis in sorted(common.items()):
44 log(' %-10s %s\n' % (cmd, synopsis))
47 log('Other available commands:\n')
49 for c in sorted(os.listdir(cmdpath) + os.listdir(exepath)):
50 if c.startswith('bup-') and c.find('.') < 0:
52 if cname not in common:
54 log(columnate(cmds, ' '))
57 log("See 'bup help COMMAND' for more information on " +
58 "a specific command.\n")
65 # Handle global options.
67 global_args, subcmd = getopt.getopt(argv[1:], '?Vd:',
68 ['help', 'version', 'bup-dir='])
69 except getopt.GetoptError, ex:
70 log('error: ' + ex.msg + '\n')
76 for opt in global_args:
77 if opt[0] == '-?' or opt[0] == '--help':
79 if opt[0] == '-V' or opt[0] == '--version':
81 elif opt[0] == '-d' or opt[0] == '--bup-dir':
84 log('error: unexpected option "%s"\n' % opt[0])
93 if help_requested and subcmd[0] != 'help':
94 subcmd = ['help'] + subcmd
96 if len(subcmd) > 1 and subcmd[1] == '--help' and subcmd[0] != 'help':
97 subcmd = ['help', subcmd[0]] + subcmd[2:]
99 subcmd_name = subcmd[0]
103 subcmd_env = os.environ
105 subcmd_env.update({"BUP_DIR" : dest_dir})
108 sp = os.path.join(exepath, 'bup-%s' % s)
109 if not os.path.exists(sp):
110 sp = os.path.join(cmdpath, 'bup-%s' % s)
113 if not os.path.exists(subpath(subcmd_name)):
114 log('error: unknown command "%s"\n' % subcmd_name)
117 already_fixed = atoi(os.environ.get('BUP_FORCE_TTY'))
118 if subcmd_name in ['ftp', 'help']:
120 fix_stdout = not already_fixed and os.isatty(1)
121 fix_stderr = not already_fixed and os.isatty(2)
124 if fix_stdout or fix_stderr:
125 amt = (fix_stdout and 1 or 0) + (fix_stderr and 2 or 0)
126 os.environ['BUP_FORCE_TTY'] = str(amt)
127 os.setsid() # make sure ctrl-c is sent just to us, not to child too
129 if fix_stdout or fix_stderr:
130 realf = fix_stderr and 2 or 1
131 drealf = os.dup(realf) # Popen goes crazy with stdout=2
132 n = subprocess.Popen([subpath('newliner')],
133 stdin=subprocess.PIPE, stdout=drealf,
134 close_fds=True, preexec_fn=force_tty)
136 outf = fix_stdout and n.stdin.fileno() or None
137 errf = fix_stderr and n.stdin.fileno() or None
144 class SigException(Exception):
145 def __init__(self, signum):
147 Exception.__init__(self, 'signal %d received' % signum)
148 def handler(signum, frame):
149 raise SigException(signum)
151 signal.signal(signal.SIGTERM, handler)
152 signal.signal(signal.SIGINT, handler)
158 p = subprocess.Popen([subpath(subcmd_name)] + subcmd[1:],
159 stdout=outf, stderr=errf, preexec_fn=force_tty)
161 # if we get a signal while waiting, we have to keep waiting, just
162 # in case our child doesn't die.
166 except SigException, e:
167 log('\nbup: %s\n' % e)
168 os.kill(p.pid, e.signum)
171 log('%s: %s\n' % (subpath(subcmd_name), e))
174 if p and p.poll() == None:
175 os.kill(p.pid, signal.SIGTERM)